.bg-body-tertiary {
  background-color: transparent !important;
}
.bg-body-tertiary .navbar-collapse {
  flex-grow: 0;
}
.container {
  padding: 10px 0;
}
.container .active {
  color: #f2b535 !important;
  border-bottom: 4px solid #f2b535;
}
.container .nav-link {
  color: white;
}
.container .nav-item a:hover {
  color: #f2b535;
  background: none;
}
.navbar-toggler-icon {
  background-image: url('data:image/svg+xml;charset=utf8,%3Csvg viewBox="0 0 30 30" xmlns="http://www.w3.org/2000/svg"%3E%3Cpath stroke="white" stroke-width="2" stroke-linecap="round" stroke-miterlimit="10" d="M4 7h22M4 15h22M4 23h22"/%3E%3C/svg%3E');
}
.carousel .carousel-item {
  height: 500px;
  background-size: cover;
  background-position: center;
}
@media (max-width: 767px) {
  .carousel .carousel-item {
    height: 250px;
    /* 屏幕宽度小于 768px 时 */
  }
}
@media (min-width: 768px) and (max-width: 991px) {
  .carousel .carousel-item {
    height: 400px;
    /* 屏幕宽度 768px 到 991px 时 */
  }
}
@media (min-width: 992px) {
  .carousel .carousel-item {
    height: 500px;
    /* 屏幕宽度大于等于 992px 时 */
  }
}
.carousel .carousel-item:nth-last-child(1) {
  background-image: url(../assets/uploads/banner_1.jpg);
}
.carousel .carousel-item:nth-last-child(2) {
  background-image: url(../assets/uploads/banner_2.jpg);
}
.carousel .carousel-item:nth-last-child(3) {
  background-image: url(../assets/uploads/banner_3.jpg);
}
.carousel .carousel-item:nth-last-child(4) {
  background-image: url(../assets/uploads/banner_4.jpg);
}
.project {
  margin-top: 60px;
  text-align: center;
}
.project .title span {
  font-size: 30px;
  margin-right: 10px;
}
.project .title b {
  font-size: 30px;
}
.project .title p {
  margin-top: 10px;
  font-size: 16px;
  color: #919191;
}
.project .content .row .pro {
  transition: all 0.3s ease;
}
.project .content .row .pro:hover {
  transform: translateY(-6px);
  box-shadow: 0 26px 40px -24px rgba(0, 36, 100, 0.5);
}
.project .content .row div {
  transition: all 0.3s ease;
  height: 200px;
  margin-bottom: 15px;
}
.project .content .row div a {
  display: block;
  color: white;
  text-decoration: none;
  height: 200px;
  border-radius: 4px;
}
.project .content .row div a .art {
  padding: 20px 10px;
}
.project .content .row div a .im {
  height: 60px;
  overflow: hidden;
  display: inline-block;
}
.project .content .row div a .im img {
  vertical-align: middle;
  height: 100%;
}
.project .content .row div:nth-child(1) a {
  background-color: #70c3ff;
}
.project .content .row div:nth-child(2) a {
  background-color: #fd6a7f;
}
.project .content .row div:nth-child(3) a {
  background-color: #7f8ea0;
}
.project .content .row div:nth-child(4) a {
  background-color: #89d04f;
}
.btn-lg {
  border-color: #cccccc;
  background-color: #e1e1e1;
  color: #616161;
  font-weight: 400;
}
.btn-lg:hover {
  color: #333333;
  background-color: #e6e6e6;
  border-color: #adadad;
  text-decoration: none;
}
